Fig. 20

Patient with ulceration (a) at the sole of the foot directly beneath the cuboid bone as a typical complication of rocker-bottom deformity of the foot. MRI with sagittal STIR sequence (b) demonstrates contiguous spread of infection from the skin, forming a sinus tract (red arrow) to the cuboid bone (asterisk) and bone marrow edema due to active Charcot disease (arrow heads). Sagittal T1-weighted sequence shows focal replacement of fatty bone marrow signal within the cuboid bone (c), representing osteomyelitis